I don't, but I remember when I worked at Starbucks some of my customers did.
Our tip jar is NOT Take A Penny, Leave A Penny, but if we found a state quarter in there (and the customer collected them) I'd exchange the non-state one for the state one.
(I once read a Cosmo Confessions where this woman was dating a guy that has been collecting state quarters for a LONG time. Well, he cheated on her and they broke up. To get back at him, she took all his state quarters and did laundry with them!)